Grease gun cartridge



May 11, 1943. E. C. DEEGHTON GREASE GUN CARTRIDGE Filed May 2, 1941 Attorney Patented May 11, 1943 GREASE GUN CARTRIDGE Earl C. Deighton,Westview, British Columbia,

Canada Application May 2, 1941, Serial No. 391,616

1 Claim.

This invention relates to a cartridge for a grease gun, the generalobject of the invention being to provide a collapsible cartridgecontaining the grease with means for connecting the cartridge to theplunger of the grease gun so that as the plunger is moved inwardly thecartridge will be collapsed so that grease will be discharged therefromthrough the outlet of the gun, thus providing a device which is simple,clean, a time saver and economical in that there is no wastage ofgrease.

This invention also consists in certain other features of constructionand in the combination and arrangement of parts to be hereinafter fullydescribed, illustrated in the accompanying drawing and specificallypointed out in the appended claim.

In describing the invention in detail, reference will be had to theaccompanying drawing wherein like characters denote like orcorresponding parts throughout the several views, and in which:

Figure 1 is an elevational view of a grease gun with parts in sectionshowing the invention in use therein.

Figure 2 is a sectional view through the lower part of the cartridge andshowing the plug which closes the outlet opening in the bottom of thecartridge. 1

Figure 3 is a face view of the plunger or piston showing the means forengaging the clamp.

Figure 4 is a view of the clamp for connecting the upperend of thecartridge with the plunger.

As shown I provide a collapsible cartridge A which contains grease orother matter to be dispensed and said cartridge is formed of soft metaland is provided with the indentations l which are so formed and arrangedthat when pressure comes upon an end of the cartridge such indentationswill cause the cartridge to collapse. The upper end of the cartridge isflattened as shown at 2 and a substantially U-shaped clamp 3 is adapted:to be pressed over this flattened end.

the bight part of the clamp being enlarged andof loop shape and thisenlarged part fits in the guide members 4 formed on the plunger orpiston 5 of the gun G so that the upper end of the cartridge isdetachably connected to the piston or plunger. The other end of thecartridge is formed with an opening which is normally closed by athreaded plug 6, it being understood that this plug is removed beforethe cartridge is placed in the gun so that the opening will registerwith the outlet nipple 1 of the gun.

Thus when the piston or plunger 5 is pressed inwardly in any suitablemanner, such as by the screw shaft 8 which passes through the cap 9 ofthe gun and is connected with the plunger or piston, the pressureagainst the cartridge will cause it to partly collapse at some of theindentations I so that the grease will be forced therefrom through thenipple I. has been fully forced from the cartridge the cap 9 can beremoved and then the plunger or piston 5 withdrawn and this will removethe empty cartridge.

The indentations should be 50 arranged in the cartridge that thedistance between them is less than one-half the width of the cartridgeso that the collapsing of the cartridge at any point in the lengththereof will leave a passage through the center of the collapsed part sothat there is no danger of any grease being trapped in the cartridgeregardless of where the collapsing begins.

It is thought from the foregoing description.

that the advantages and novel features of the invention will be readilyapparent.

It is to be understood that changes may be made in the construction andin the combination and arrangement of the several parts provided thatsuch changes fall within the scope of the appended claim. 1

Having described the claimed as new is:

In combination with a grease gun having a plunger and a dischargeopening, a collapsible cartridge containing grease andadapted to beinvention, what I is inserted in the gun, said cartridge being providedin one end thereof with a. discharge opening for registration with adischarge opening of the gun, circumferential indentations formed in thecartridge for causing it to collapseunder pressure exerted against thesame endw'lse, the opposite end of said cartridge being tapered andterminating in a flat teat, a T-shaped clip clampingly engaging saidteat, and means carried by the plunger for interlocking engagement withthe T-shaped clip during travel of the plunger.

EARL C. DEIGHTON.

When the grease

